WO2018082124A1

WO2018082124A1 - Hollow elastic ball production process and centrifugal molding machine thereof

Info

Publication number: WO2018082124A1
Application number: PCT/CN2016/106553
Authority: WO
Inventors: 张人方; 朱露稀
Original assignee: 东莞市聚成福环保材料有限公司
Priority date: 2016-11-02
Filing date: 2016-11-21
Publication date: 2018-05-11
Also published as: CN106346669A

Abstract

A hollow elastic ball production process and a centrifugal molding machine thereof, the production process comprising the following steps: (1) spraying a mold release agent in a cavity (32) of a molding fixture (30); (2) injecting a certain amount of liquid gel into the cavity (32) of the molding fixture (30), wherein the volume of the liquid gel smaller than the volume of the cavity (32); (3) placing the molding fixture (30) which is injected with the liquid gel on a rotation frame (20) of a centrifugal molding machine, wherein the molding fixture (30) rotates about an axis thereof and revolves along with the rotation frame (20) for 3-8 min; (4) removing the molding fixture (30) from the centrifugal molding machine, and baking in an oven for 5-15 min, wherein the temperature is maintained at 80-100℃; and (5) removing the molding fixture (30) from the oven, opening the molding fixture (30) to obtain a hollow elastic ball. Since the molding fixture (30) can revolve along with the rotation frame (20) as well as rotate, a gel body in the molding fixture (30) may be more uniform in thickness during the centrifugal molding process, the level of concentricity between the cavity and the spherical center of the gel body is higher, thus said hollow ball is capable of being smaller and having better elasticity.

Description

Production process of hollow elastic small ball and centrifugal molding machine thereof

Technical field

The invention relates to the technical field of production of hollow elastic balls, in particular to a production process of a hollow elastic small ball and a centrifugal forming machine thereof.

Background technique

Hollow elastic balls are generally used for the soles of sports shoes, slippers or children's shoes to enhance the shock absorption effect and increase the wearing comfort. When the hollow elastic ball is made, it is generally injected into the forming fixture by liquid colloid, and then the centrifugal body is used to form a cavity inside the colloid during the curing process. At present, in the production process of hollow elastic spheres, centrifugal molding is generally achieved only by the rotation of the forming jig, and the formed small balls are not uniform in thickness, the elasticity is weak, and the damage is liable to occur, so that the hollow elastic balls cannot be made more. The small size, while the small size of the elastic ball can only be made solid, not only increases the material cost, but also the elasticity of the solid ball can not meet the shock absorption requirements.

Summary of the invention

The present invention provides a hollow elastic elastic ball production process and a centrifugal molding machine thereof, which can achieve a smaller size, better elasticity, and lower production cost.

In order to achieve the above object, the present invention adopts the following technical solutions:

A production process of a hollow elastic pellet comprises the following steps:

(1) spraying a release agent in a cavity of the molding jig;

(2) injecting a certain amount of liquid glue into the cavity of the forming fixture through the liquid injection device, and making the volume of the liquid glue smaller than the volume of the cavity;

(3) The molding jig into which the liquid glue is injected is mounted on the rotating frame of the centrifugal molding machine, and the forming jig is rotated around its own axis and revolved with the rotating frame for 3-8 min;

(4) The forming jig is taken out from the centrifugal forming machine, sent to the oven for baking for 5-15 min, and the temperature is maintained at 80-100 ° C;

(5) The forming jig is taken out of the oven, and the forming jig is opened to obtain a hollow elastic small ball.

As a preferred embodiment, the liquid glue is one of polyurethane, polyvinyl chloride, rubber or silica gel.

As a preferred solution, the forming fixture is provided with a plurality of cavities.

As a preferred embodiment, the cavity is spherical, ellipsoidal or hemispherical.

As a preferred embodiment, the diameter of the hollow elastic pellet is controlled within 3 cm.

As a preferred solution, the rotational speed of the forming fixture for rotation and revolution is controlled at 50-300 RPM.

A hollow elastic pellet centrifugal molding machine comprising a base, a rotating frame, a first driving component, a second driving component, a first rotating shaft, a plurality of forming fixtures and a second rotating shaft, wherein the rotating frame is mounted through the first rotating shaft On the base, and can be driven to rotate around the first rotating shaft by a first driving component disposed on the base, the plurality of forming clamps are respectively mounted on the rotating frame through the second rotating shaft, and can be disposed on the rotating frame The two driving elements drive the rotation, and each of the forming fixtures comprises two strip-shaped splints that can be opened and closed, and a plurality of cavities for molding the hollow elastic pellets are disposed between the two splints.

As a preferred solution, the rotating frame includes a rectangular frame having two supporting arms arranged in parallel and two clamp mounting plates respectively disposed at two ends of the two supporting arms, the one supporting arm and the first The rotating shaft is rotatably connected, and the other supporting arm is drivingly coupled to the first driving member, and the plurality of forming clamps are detachably mounted between the two clamp mounting plates.

As a preferred solution, the clamping faces of the two clamping plates of the respective forming jigs are respectively provided with positioning grooves for clamping and positioning protrusions which are matched with the positioning grooves. When the mold is closed, the positioning convex blocks are embedded. In the positioning slot.

Compared with the prior art, the invention has obvious advantages and beneficial effects. Specifically, by setting a rotating frame, the forming fixture is revolved with the rotating frame, and at the same time, the forming fixture is rotated on the rotating frame, so that the colloid in the forming fixture is The thickness is more uniform during the centrifugal forming process, and the concentricity of the cavity and the core of the colloid is higher, and the damage is less likely to occur. The elastic small ball can be made smaller, and the elasticity of the hollow elastic ball is higher, and the elasticity is improved. The production quality of the hollow elastic pellets reduces the production cost of the enterprise; the invention also provides a centrifugal molding machine for hollow elastic pellets, wherein the rotating frame of the centrifugal molding machine can simultaneously place a plurality of molding fixtures, and each molding fixture can be Simultaneously forming a plurality of small balls greatly improves production efficiency and reduces production cost; in addition, since the hollow elastic small balls produced by the present invention have better elasticity, when the soles of sports shoes, slippers or children's shoes are to be used, Improve wearing comfort and increase user satisfaction.

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

DRAWINGS

1 is a perspective view showing an assembly structure of a centrifugal molding machine according to an embodiment of the present invention;

Figure 2 is a front elevational view showing the assembly structure of a centrifugal molding machine according to an embodiment of the present invention;

Figure 3 is a structural view showing the assembly of a molding jig according to an embodiment of the present invention;

Figure 4 is an exploded perspective view of a molding jig of an embodiment of the present invention.

Description of the figure:

10, the base 11, the first shaft 12, the first drive component

13. Second rotating shaft 14, second driving element 20, rotating frame

21, support arm 22, fixture mounting plate 30, forming fixture

31, splint 32, cavity 33, positioning groove

34. Positioning bumps

detailed description

Referring to FIG. 1-4, a hollow elastic pellet centrifugal molding machine includes a base 10, a rotating frame 20, a first driving component 12, a second driving component 14, a first rotating shaft 11, and a plurality of forming fixtures. And the second rotating shaft 13 , the rotating frame 20 is mounted on the base 10 via the first rotating shaft 11 , and can be driven to rotate around the first rotating shaft 11 by the first driving component 12 disposed on the base 10 , the plurality of The molding jigs 30 are respectively mounted on the rotating frame 20 through the second rotating shaft 13, and can be driven to rotate by the second driving elements 14 provided on the rotating frame 20, and each of the forming jigs 30 includes two strips that can be opened and closed. a clamping plate 31, between the two clamping plates 31, three or more cavities 32 for forming hollow elastic pellets are provided, and the clamping faces of the two clamping plates 31 are respectively provided with positioning grooves 33 for facilitating clamping and The positioning protrusions 34 of the positioning groove 33 are fitted in the positioning groove 33 when the mold is clamped. The rotating frame 20 includes a rectangular frame having two supporting arms 21 disposed in parallel and two clamp mounting plates 22 respectively disposed at two ends of the two supporting arms 21, the one supporting arm 21 and the first rotating shaft 11 is rotatably connected, the other support arm 21 is drivingly coupled to the first drive member 12, and the plurality of molding jigs 30 are detachably mounted between the two clamp mounting plates 22. In the present invention, the cavity 32 may be spherical, ellipsoidal or hemispherical, and the cavity 32 has a diameter of less than 3 cm.

A production process of a hollow elastic pellet comprises the following steps:

(1) spraying a release agent on a molding jig;

(2) injecting a certain amount of liquid glue into the cavity of the forming fixture through the liquid injection device, and making the volume of the liquid glue smaller than the volume of the cavity; the liquid glue is in polyurethane, polyvinyl chloride, rubber or silica gel One type; the cavity may be spherical, ellipsoidal or hemispherical;

(3) The molding jig into which the liquid glue is injected is mounted on the rotating frame of the centrifugal molding machine, and the forming jig is rotated around its own axis and revolved with the rotating frame, and the rotation speed of the forming jig for rotation and revolution is controlled at 50-300 RPM. And keep it for 3-8min;

(5) The molding jig 30 is taken out from the oven, and the molding jig 30 is opened to obtain a hollow elastic pellet having a diameter of less than 3 cm.

In the present invention, the molding jig is provided with a plurality of cavities, and liquid glue is simultaneously injected into each cavity during the production process, and then the molding jig is mounted on the centrifugal molding machine, so that a plurality of hollow elastic balls can be formed at one time. Moreover, the centrifugal molding machine of the present invention can also place a plurality of molding jigs at a time, thereby enabling mass production of hollow elastic pellets and improving production efficiency.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc., which are actually made to the above embodiments in accordance with the teachings of the present invention, still belong to the present invention. Within the scope of the technical solution.

Claims

The invention discloses a production process of a hollow elastic small ball, which comprises the following steps:

(1) spraying a release agent in a cavity of the molding jig;

(2) injecting a certain amount of liquid glue into the cavity of the forming fixture through the liquid injection device, and making the volume of the liquid glue smaller than the volume of the cavity;

(3) The molding jig into which the liquid glue is injected is mounted on the rotating frame of the centrifugal molding machine, and the forming jig is rotated around its own axis and revolved with the rotating frame for 3-8 min;

(4) The forming jig is taken out from the centrifugal forming machine, sent to the oven for baking for 5-15 min, and the temperature is maintained at 80-100 ° C;

(5) The forming jig is taken out of the oven, and the forming jig is opened to obtain a hollow elastic small ball.
The process for producing a hollow elastic pellet according to claim 1, wherein the liquid glue is one of polyurethane, polyvinyl chloride, rubber or silica gel.
The process for producing a hollow elastic pellet according to claim 1, wherein the molding jig is provided with a plurality of cavities.
The process for producing a hollow elastic pellet according to claim 3, wherein the cavity is spherical, ellipsoidal or hemispherical.
The process for producing a hollow elastic pellet according to claim 1, wherein the diameter of the hollow elastic pellet is controlled within 3 cm.
The process for producing a hollow elastic pellet according to claim 1, wherein the rotational speed of the forming fixture is controlled at 50-300 RPM.
A hollow elastic pellet centrifugal molding machine, comprising: a base, a rotating frame, a first driving component, a second driving component, a first rotating shaft, a plurality of forming fixtures and a second rotating shaft, wherein the rotating frame passes The first rotating shaft is mounted on the base and can be driven by the first driving component disposed on the base The driving is rotated about the first rotating shaft, and the plurality of forming jigs are respectively mounted on the rotating frame through the second rotating shaft, and can be driven to rotate by a second driving component provided on the rotating frame, each of the forming jigs including the opening and closing Two strip-shaped splints, a plurality of cavities for forming hollow elastic pellets are arranged between the two splints.
The hollow elastic pellet centrifugal molding machine according to claim 7, wherein the rotating frame comprises a rectangular frame, and the rectangular frame has two supporting arms arranged in parallel and respectively disposed at two ends of the two supporting arms. Two clamp mounting plates, the one support arm is rotatably coupled to the first rotating shaft, and the other support arm is drivingly coupled to the first driving component, and the plurality of forming clamps are detachably mounted between the two clamp mounting plates.
The hollow elastic pellet centrifugal molding machine according to claim 7, wherein the cavity is spherical, ellipsoidal or hemispherical.
The hollow elastic pellet centrifugal molding machine according to claim 7, wherein the clamping faces of the two clamping plates of the respective forming fixtures are respectively provided with positioning grooves for clamping and fitting with the positioning grooves. The positioning protrusion is embedded in the positioning groove when the mold is clamped.